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554t shock sensor

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14465
Printed Date: July 07, 2025 at 4:42 PM


Topic: 554t shock sensor

Posted By: Mr_Kite
Subject: 554t shock sensor
Date Posted: June 04, 2003 at 5:19 PM

The wire for the 554t shock sensor has the same harness on each side.  One harness has the green wire looped back in to the blue wire while the other side the green wire conects to nothing(for optional sensors).

Which side goes into the sensor and which side goes tothe unit?

Thanks!




Replies:

Posted By: x6369x
Date Posted: June 04, 2003 at 7:03 PM
The side that has the loop from green to blue goes to the sensor, and the other side plugs into the brain.

The shock sensor is multiplexed, meaning that it sends out a different length pulse depending on the trigger.
If the sensor detects a warning trigger, it sends a 0.5 second pulse to the green wire. If the sensor detects an alarm trigger, it sends a 1.0 second pulse to the blue wire. The brain is smart enough to differentiate the differences in the two pulses. Therefore, you could hook-up another sensor to the green wire @ the brain (ie - 508D, dual stage proximity sensor).

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